“I don't want him to get away with this murder and have him go out and do it again,” McDonough said. “I am letting it be known what actually happened that night.”

Mazzaglia, 31, of Dover, is on trial at Strafford County Superior Court for first- and second-degree murder. Prosecutors claim he strangled University of New Hampshire student Elizabeth “Lizzi” Marriott inside his Sawyer Mill apartment on Oct. 9, 2012, after she refused to participate in sexual activity with McDonough and Mazzaglia.

During his recross examination Friday, Barth was asking McDonough questions about her testimony in the case thus far. He was making the assertion that McDonough, 20, does not have a problem answering questions posed to her by Assistant Attorney General Peter Hinckley, but does have a problem answering his lines of questioning.

“Do you think there is a difference between the way you answer my questions and they way you answer questions from the state?” Barth asked.

“Some of yours have been a little open ended and confusing,” McDonough replied.

“Isn't it that you answer my questions differently from the state because you are afraid to admitting to a lie and then your plea deal would fall apart?” Barth asked. McDonough was sentenced to 1½ to 3 years in prison for her involvement in Marriott's death in exchange for her truthful testimony during Mazzaglia's trial.

“The way you talk confuses me sometimes,” McDonough said, later adding, “I want you guys to all know the truth of what happened and I don't want to get confused.”

Barth has been trying to show that McDonough's story to the grand jury, which indicted Mazzaglia, was made up. He is attempting to prove that the version of events McDonough told public defenders just days after Mazzaglia was arrested on Oct. 13, 2012, is the truth.

McDonough told employees at Barth's office in Dover on Oct. 15, 2012, that Marriott died from a seizure that started while she was engaged in a consensual threesome with the Dover couple.

McDonough signed a statement for the people who would eventually become Mazzaglia's attorneys on Oct. 17, 2012, saying she sat on Marriott's face for approximately 10 to 15 minutes before the seizure began. McDonough got onto her knees to demonstrate the position she claimed she was in when Marriott died.

Jurors listened to a portion of McDonough's testimony to the grand jury after their lunch break Friday. The audio recording they heard was approximately an hour long. It included the same details McDonough told jurors during her direct examination on Wednesday, June 4, but this time it was uninterrupted.

“Seth has two sides to him. He has a really good side and he has a really bad side,” McDonough said to the grand jury when she got to the part of her testimony where Mazzaglia allegedly strangled Marriot from behind with a rope.

“I could just feel the energy in the room change,” McDonough said, “He had gone bad.”

McDonough said she did nothing to stop Mazzaglia as he strangled her former co-worker because if she tried, he would hurt her.

“If I were to try and stop him, he would kill me too,” McDonough said.

McDonough said that after Marriott's body stopped moving, Mazzaglia began having sex with it.

“It was just missionary style and he was being rough,” McDonough said. “He finished and he said 'Come here.' He told me to hold the rope while he went to the bathroom. I told him I couldn't do it. His voice was cruel sounding like, 'You need to hold the rope.'”

McDonough testified that she got onto the floor near Marriott's head and held it down on either side of her neck.

“I wasn't really putting any pressure on it,” McDonough said. “She was gone. She was barely moving and I knew if I didn't do it, I would be next.”

McDonough said she started to cry. Mazzaglia said, “It's OK, we are in this together.”

On the audio recording, McDonough said it was strange the way Roberta Gerkin of Rochester acted when she arrived at the Sawyer Mill apartment with her boyfriend, Paul Hickok. When the couple walked in, Marriott was lying on the floor next to the futon Mazzaglia and McDonough used as a bed. She was face up and wearing only thong underwear.

A plastic bag was tied around her head.

“If Paul was not there she would have helped Seth,” McDonough told the grand jurors. “The entire time they were there Paul was consistently saying, 'You got to call someone.' Roberta was saying that basically, 'You have two options. You call someone or you have to deal with this yourself.'”

McDonough said she started to cry again when Hickok told Mazzaglia, “Dude, you've got to take the consequences for your actions.”

“I had nowhere else to go,” McDonough explained.

McDonough said she became even more upset by the way Mazzaglia began talking about Marriott.

“It was like she wasn't a person, just something we had to get rid of,” McDonough said.

McDonough described how she and Mazzaglia brought Marriott's body to Peirce Island to throw it into the Piscataqua River. McDonough said she would never forget how she felt when she finished covering Marriott's body in seaweed after dragging it into the water when Marriott landed on the rocks with the upper half of her corpse exposed.

McDonough also described for the grand jury what she and Mazzaglia did in the next few days after Marriott's death.

“The next morning I remember it was raining pretty hard,” McDonough said. “There was just too much going on in my mind.”

McDonough said she was reluctant to have sex with Mazzaglia, but he cooked her some food and put her on top of him.

“Which usually, in our lifestyle, I had to earn,” McDonough said.

McDonough said another couple came over that night to hang out.

On the 11th, the day before police caught up with the couple at Best Buy in Newington, McDonough and Mazzaglia went to the karate dojo where he taught a class and then they did some grocery shopping.

Afterward, they went to a local movie theater to see “Looper,” a science fiction action thriller.

Playing McDonough's grand jury testimony was the way Hinckley ended his redirect examination of McDonough, who has been on the witness stand for nine court days.

The prosecution started the day with a recorded phone conversation from Strafford County House of Corrections in which Mazzaglia chose his defense team based on a tarot card reading.

The reading was conducted by McDonough after she went to the public defenders' office. McDonough pulled the cards and Mazzaglia helped her interpret them.

Mazzaglia told McDonough to tell his father that he should use the money he would have paid for private counsel to send her to school to be paramedic or to attend the University of New Hampshire.

“I will give it a little more thought,” Mazzaglia said. “But do you want to go with a person who has done this for 30 years and does it for fun or money, or the ones who have, quite a bit of experience actually, and are looking to cut their teeth on a challenge?”

Hinckley later played recorded statements McDonough made to Gerkin that she did not know Gerkin was recording for police.

McDonough told Gerkin on Oct. 26, 2012 that Mazzaglia's defense attorneys were working to figure out what he would say about Marriott's death, but it would probably be portrayed as an accident during sex.

“And it just sucks knowing that there's, the actual truth,” McDonough said. “Dark Heart and I are probably the only ones that will ever really know.”

McDonough then told Gerkin she would lie for Mazzaglia, the man otherwise known as Dark Heart.

“It's a bad feeling. I would lie. I would lie for him,” she said.

McDonough is expected to take the stand again on Monday at 9 a.m.

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